55 fiveDouble Nickel Chevy. This is the place to buy all your 55, 56 and 57 Chevy parts.! We have everything from grilles, headlhts and parklhts to emblems, taillhts, bumpers$5+55+555+5555+55555+cdots n$ terms, Sum of finite seqence of this pattern can be obtained by re-arranging this into geometric sequence. $5$ should be taken common